Metal jamb construction



April 25, 1933. BAUM I 1,905,125

METAL JAMB CONSTRUCTION Filed April '7, 19:50

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Patented Apr. 25, 1933 UNITED STATES ISAAC A. BAUM, OF CHICAGO, ILLINOIS METAL JAMB CONSTRUCTION Application filed April 7, 1930. Serial No. 442,241. w

My invention relates to building construction and more particularly to a novel form of metal door jamb, and the like.

Modern methods of building construction require that all door and window frames be as rigid as possible for the reason that if the plaster surrounding the frames is not fastened securely to them it cracks and breaks off with but little jarring. The usual method of construction calls for the plaster to be put on the wall up to the very edge of the frame, and is laid next to the wood or metal parts of the frames with no binder or physical securing means to keep the plaster and the frame in the same physical relation at all times. As a result of the constant slamming of doors, the plaster soon separates from the frame and having no relative strength, cracks off and makes the joint and the plaster around the frame very unsightly.

My invention has for its object the elimination, as far as possible, of cracked plaster around a metal door frame or jamb. This is made possible by welding or otherwise securing a plurality of relatively rigid bent wires to the flanges of the j amb adjacent the plaster terminal to provide an efficient anchorage at the point most desired.

By referring to the accompanying drawin it will be seen that Fig. 1 is a horizontal sectional view of a channel frame showing the plaster securing means of my invention secured thereto;

Fig. 2 is a plan sectional View of the channel frame shown in Fig. 1;.

Fig. 3 is a side elevation thereof;

Fig. 4 is a rear elevation of the channel frame showing the plaster securing means of my invention.

By referring to the drawing, it will be seen that I have provided a channel shaped metal jamb generally indicated at 10, having the flanges 11, and a door stop 12 formed in the web thereof.

On the flanges of the channel I also provide the angularly bent plaster terminals 13 welded thereto, the margins 14 thereof being rebent to provide a plaster anchor.

The plaster anchors adapted for use in oo- 50 operation with the jamb herein disclosed comprisea plurality of alternately bent wires 15-46. The anchor Wires 15-16 are formed of alternate bends, the wires being welded or otherwise secured to the flanges 11 at the al- 4 ternate bends, indicated at 17-18. The Pf anchor wires are preferably welded alternately as is best shown in Fig. 4, that is, the adjacent wires are welded to the frame at alternate bends. The anchor wires may be of any desired gauge of metal sufficient for 9 the purpose desired, and may be applied to the jamb at the factory when the same is fabricated.

Thus, it will be seen that the use of a door j amb such as herein disclosed will provide a 5 permanent and eflicient binding means for the plaster applied directly thereto. The j amb is installed by fitting the channel flange 11 over a tile or brick wall. Thus, the frame provides a rigid surface against all stresses set up against the door stop 12.

Obviously modificationsmay be made in the construction herein disclosed, and I do not wish to be limited except as indicated in the appended claims.

I claim:

1. In metal jamb construction, the combination of a metal jamb member having a flange, an anchor secured to the said flange comprising a plurality of alternately bent lengths of wire, each of said wires being secured to the channel flanges at alternate bends in the length thereof, one of said wires being secured to said flange at points intermediate the points engaged by the other wire.

2. In metal jamb construction, thecombination of a channel shaped metal j amb member, and wire anchors secured to the channel flanges thereof comprising a plurality of parallel alternately bent lengths of wire, said 39 anchors being secured to the channel flanges at alternate bends in the length thereof, the bends in the adjacent wires being secured to the flanges in alternate relation, each to the other. 7 9,

3. In a metal jamb construction, a jamb member having a flange, an anchor comprising a plurality of alternately bent lengths of wire secured to said flange at alternate bends in the length thereof, the bends in the adjacent wires being secured to the flange in alternate relation each to the other.

4. In a metal jamb construction the combination of a metal jamlo having a flange, a wire plaster anchor comprising a pair of substantially parallel Wires each having a plurality of convolutions connected to said flange and a plurality of convolutions spaced from said flange, said pair of Wires being so ar- 1 ranged that a cross section through said flange at any point will pass through one of the convolutions in spaced relationto said flange.

In testimony whereoflihave alfixedmy signature.

ISAAC A. BAUM 

